US10316915B2 - Brake gear motor group - Google Patents

Brake gear motor group Download PDF

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US10316915B2
US10316915B2 US15/301,098 US201515301098A US10316915B2 US 10316915 B2 US10316915 B2 US 10316915B2 US 201515301098 A US201515301098 A US 201515301098A US 10316915 B2 US10316915 B2 US 10316915B2
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Prior art keywords
chamber
reducer
brake
support plate
housing
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US15/301,098
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US20170023081A1 (en
Inventor
Paolo Sala
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Brembo SpA
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Freni Brembo SpA
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Assigned to FRENI BREMBO S.P.A. reassignment FRENI BREMBO S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SALA, PAOLO
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Assigned to BREMBO S.P.A. reassignment BREMBO S.P.A. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: FRENI BREMBO S.P.A.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers
    • F16D2055/002—Brake calipers assembled from a plurality of parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0037—Protective covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/50—Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H37/041—Combinations of toothed gearings only for conveying rotary motion with constant gear ratio

Definitions

  • This invention relates to a gear motor group.
  • this invention relates to a gear motor group for operating electromechanical disc brake callipers.
  • This piston is usually accommodated in a cylinder formed in the body of the calliper and is energized by brake fluid pressurized by a brake pump, usually pedal operated.
  • the actuator comprises a motor having a motor shaft, and a gear train coupled to the motor shaft, wherein the gear includes at least one mechanical output from the actuator.
  • the gear train includes a gear coupled to the motor shaft, a driven gear coupled to the drive gear, and a planetary gear group coupled to the driven wheel.
  • This document describes configurations for insulating components of the actuator and controlling audible noise, wherein a support structure is coupled to a housing by means of insulators and insulators are provided to support the motor and gear train.
  • This solution by focusing on the reduction of the noise produced by the operation of the gear motor, proposes a kinematic motor gear train that is elastically constrained to the support structure, a structure that, in turn, being inserted in the housing of the gear motor, is always moving, in fact, in preferred embodiments of this known solution, the support structure is elastically constrained to the housing.
  • the purpose of this invention is to propose a group that allows achieving the above-mentioned needs as well as solving the drawbacks of the prior art mentioned so far.
  • FIG. 1 represents, in an axonometric view, a disc brake comprising a gear motor group coupled to a calliper placed astride a brake disc, in accordance with a possible embodiment
  • FIG. 2 represents a front view of the calliper-gear motor group of FIG. 1 ;
  • FIG. 3 represents a section along line of FIG. 2 ;
  • FIG. 4 shows a section along line IV-IV of FIG. 2 ;
  • FIG. 5 represents, in an axonometric view, a gear motor group seen from the side of coupling to a calliper;
  • FIG. 6 represents, in an exploded axonometric view, a gear motor group according to an embodiment
  • FIG. 7 represents, in an exploded axonometric view, a part of the components of the group of FIG. 6 ;
  • FIG. 8 represents, in an exploded axonometric view, the group of FIG. 6 according to an opposite point of view;
  • FIG. 9 represents a gear motor group from the side opposite to the side for coupling to a calliper, without cover and partially exploded, in an assembly step of the group;
  • FIGS. 10, 11 and 12 represent the gear motor group of FIG. 9 in further assembly steps of the group
  • FIG. 13 represents, in an axonometric view, a housing of a gear motor group
  • FIGS. 14 and 15 show the housing of FIG. 13 according to two other points of view
  • FIG. 16 shows, in an axonometric view, a gear motor housing with alongside a crown of a planetary gear and an electric motor in order to highlight the geometrical couplings between these components;
  • FIG. 17 shows, in an isometric view, of a crown of a planetary gear
  • FIG. 18 represents, in an axonometric view, an embodiment of first elastic means
  • FIG. 19 represents, in an axonometric view, a further embodiment of first elastic means
  • FIG. 20 illustrates, in an exploded axonometric view, an assembly step of a stop ring and first elastic means in a gear motor group
  • FIG. 21 represents, in a partially-sectioned lateral view, the assembly step of FIG. 20 ;
  • FIG. 22 shows a detail in section of the gear motor group of FIGS. 20 and 21 and the end of assembly
  • FIG. 23 shows, in section, a detail of the coupling zone between a gear motor group and a calliper when coupled together, according to an embodiment
  • FIG. 24 illustrates, in a partially-exploded axonometric view, a gear motor group in a further step of assembly of the electric motor
  • FIG. 25 shows, in section, the group of FIG. 24 at the end of the assembly phase
  • FIG. 26 represents, in a section orthogonal to the preceding, a detail of the group of FIG. 25 ;
  • FIGS. 27 and 28 represent, in an axonometric view, according to two different points of view, a stop ring according to an embodiment
  • FIG. 29 shows, in an axonometric view, a further embodiment of a stop ring
  • FIG. 30 represents an enlargement of FIG. 29 that allows highlighting a detail of the outer edge of the stop ring
  • FIG. 31 illustrates, in an axonometric view, yet another embodiment of a stop ring
  • FIG. 32 shows, in an exploded axonometric view, a gear motor group according to yet another an embodiment
  • FIG. 33 shows a detail, in section, of a gear motor group coupled to a calliper according to yet another embodiment
  • FIG. 34 represents, in an axonometric view, a stop ring according to a further embodiment
  • FIGS. 35 and 36 represent, in an axonometric view, according to two different points of view, elastic means according to a further embodiment
  • FIG. 37 shows, in an axonometric view, elastic means according to a further embodiment
  • FIG. 38 represents the gear motor assembly similar to that of FIG. 9 in an assembly step and according to yet another embodiment.
  • a brake gear motor group 1 comprises an electric motor 2 having a motor shaft 3 .
  • Said group further comprises a gearbox or reducer 4 is operatively connected, with its input side 9 , for example with first gears of its input side, to said motor shaft 3 , to receive a movement and a driving torque and transmit them with its side output 10 , for example with second gears of its output side, to the brake, for example to the thrust means of a brake calliper.
  • a gearbox or reducer 4 is operatively connected, with its input side 9 , for example with first gears of its input side, to said motor shaft 3 , to receive a movement and a driving torque and transmit them with its side output 10 , for example with second gears of its output side, to the brake, for example to the thrust means of a brake calliper.
  • Said group also comprises a housing 5 having at least one chamber 6 , 28 , 29 .
  • Said at least one chamber 6 , 28 , 29 is at least partly delimited by at least one chamber wall or mantle 7 .
  • a support plate 8 is provided in said housing.
  • Said motor 2 preferably electric, is accommodated, at least in part, in said at least one chamber 28 .
  • Said motor shaft 3 is supported freely rotatable in said support plate 8 .
  • Said reducer 4 is accommodated in said at least one chamber 6 , 29 .
  • Said reducer 4 is supported freely rotatable in said support plate 8 .
  • Said housing 5 comprises a connection rim to the brake 11 suitable to couple said housing 5 to a brake calliper 12 so as to interface with said output side 10 of the reducer 4 to the brake and allow the movement of at least one brake pad 13 towards and away from a disc brake disc 14 and exert a braking action.
  • connection rim 11 defines a connection aperture of the group to the brake 18 .
  • connection rim 11 comprises an annular retention seat 15 .
  • said group comprises first elastic means 16 .
  • Said first elastic means 16 comprise a first portion of elastic means 17 accommodated in said at least one chamber 6 , substantially astride said connection aperture 18 , interposed between said reducer 4 and the brake calliper 12 .
  • Said first elastic means 16 comprise a second portion of elastic means 19 accommodated in said annular retention seat 15 and interposed between said housing 5 and said brake calliper 12 .
  • said motor 2 defines a first axial direction X-X and said reducer 4 , at its reducer output side 10 , defines a second axial direction Y-Y.
  • said first axial direction X-X is parallel to said second axial direction Y-Y, and for example, they are parallel to the axis of rotation of the brake disc A-A.
  • said support plate 8 is connected to said housing 5 so as to delimit at least two chambers 6 , 28 , 29 open along said axial directions X-X and Y-Y from opposite sides of the housing 5 .
  • said support plate 8 is connected to said housing 5 so as to delimit three chambers 6 , 28 , 29 , two of which open, or that face in the same axial direction X-X or Y-Y, and one that faces in the opposite direction.
  • two of said three chambers 28 , 29 are closed by covers, a first cover 40 and a second cover 41 , while the third chamber 6 is suitable to connect through a connection aperture of the group to the brake 18 to a brake calliper 12
  • said reducer 4 comprises a cascade or train of gears 21 that connects said motor shaft 3 to a planetary gear reducer 22 .
  • said planetary gear reducer 22 extends along an axis parallel to, or coincident with, said second axial direction Y-Y.
  • said first portion of elastic means 17 and said second portion of the elastic means 19 are in one piece.
  • said first elastic means 16 are made of elastomer.
  • said first portion of elastic means 17 and said second portion of elastic means 19 are made of different materials.
  • said first portion of elastic means 17 and said second portion of elastic means 19 are in one piece, obtained by co-extrusion of two different materials.
  • said first portion of elastic means 17 and said second portion of elastic means 19 are made of different materials, wherein the first portion 17 is made of a material suitable to dampen the vibrations induced by the gear motor (for example EPDM Ethylene-Propylene Diene Monomer or similar), and said second portion 19 is made of a material suitable to ensure the seal between the housing 5 and the brake calliper 12 (for example an elastomer or a rubber).
  • a material suitable to dampen the vibrations induced by the gear motor for example EPDM Ethylene-Propylene Diene Monomer or similar
  • said second portion 19 is made of a material suitable to ensure the seal between the housing 5 and the brake calliper 12 (for example an elastomer or a rubber).
  • said first portion of elastic means 17 comprises a damper able to dampen the vibrations of the brake gear motor group.
  • said first portion of elastic means 17 comprises a damper able to dampen the vibrations of the brake gear motor group 1 , having a vibration frequency higher than a predefined frequency limit (for example 900 Hz).
  • said first portion of elastic means 17 comprises a means to reduce the noise coming from the gear motor group 1 and, in particular, the reducer 4 .
  • said first portion of elastic means 17 comprises an annular first elastic means body portion 20 from which project axial protuberances 23 , substantially directed along said second axial direction Y-Y.
  • said axial protuberances are a plurality of axial protuberances 23 , for example, distributed equally spaced along the annular extension of the first portion of elastic means 20 and facing the reducer 4 , for example the planetary gear 22 .
  • said axial protuberances 23 have the form of semi-spherical caps, in order to make gradual the increase of the contact area to the facing component during their crushing.
  • the plurality of axial protuberances 23 is of a pre-defined number and proportional to the intensity of the elastic/damping characteristic desired.
  • said first portion of elastic means 17 comprises an external surface of first elastic means body portion 24 suitable to face the surface, wall or mantle 7 that delimits said at least one chamber 6 .
  • radial projections of first portion of elastic means 25 are provided projecting radially from said first portion of the elastic means 17 .
  • said radial projections are a radial ring 26 .
  • said radial projections of first portion of elastic means 25 have maximum radial dimension capable of interfering with said connection aperture of the group to the brake 18 and/or with said at least one chamber wall or mantle 7 , so as to allow a pre-assembly of the first elastic means 16 in said housing 5 and preventing their accidental fall during the operations of production, assembly or maintenance of the group 1 .
  • said first portion of elastic means 17 comprises a first elastic means body portion 20 of annular shape and substantially rectangular or square cross-section.
  • the second portion of elastic means 19 extends radially to form an annular body of second portion of elastic means 27 .
  • said annular body of second portion elastic means 27 has a substantially circular cross section, for example in the form of an O-ring.
  • said support plate 8 is in one piece with said housing 5 .
  • said support plate 8 comprises a first support plate surface 52 , facing said output side 10 of reducer 4 , and a second support plate surface 53 , facing said electric motor 2 .
  • Said support plate 8 comprises a third support plate surface 54 facing said reducer input 9 side of said reducer 4 .
  • said housing 5 is divided by said support plate into three chambers 6 , 28 , 29 .
  • a first chamber 6 of said three chambers houses at least the output side 10 of the reducer 4 .
  • said first chamber 6 houses at least a planetary gear 22 .
  • said planetary gear 22 includes two pluralities of satellites 31 , 32 , a first plurality of satellites 31 being supported by a first satellite-holder stage 33 that, on the opposite side, meshes with the second plurality of satellites 32 , supported in turn by a second satellite-holder stage 34 .
  • said second satellite-holder stage has a coupling mesh 36 for coupling to the movement mechanism of a brake calliper actuator 37 , suitable to influence at least one brake pad 13 in abutment against a braking surface 38 of a disk brake disc 14 .
  • said satellites are accommodated in a toothed crown 35 that is keyed in said at least one chamber, for example said first chamber 6 .
  • said toothed crown 35 has radial crown prominences 54 suitable to interfere with the chamber wall or mantle 7 delimiting said first chamber 6 , so as to keep said toothed crown 35 in position during the assembly or pre-assembly step of the gear motor group 1 .
  • said reducer 4 is accommodated in said at least one chamber 6 by geometrically coupling its reducer seats 48 with the radial prominences of the reducer 47 provided in the chamber wall or mantle 7 that delimits at least one chamber 6 , to discharge onto these prominences 47 , and then on the housing 5 , the torsion actions and/or axial actions on the reducer 4 .
  • said electric motor 2 is accommodated in said at least one chamber 28 by geometrically coupling its motor seats 49 with the radial motor prominences 50 provided in the wall or mantle 51 that delimits said at least one chamber 28 , to discharge onto these prominences 50 , and then on the housing 5 , the torsion actions and/or axial actions in the motor 2 .
  • fourth elastic means 81 suitable to dampen the vibrations of the gear motor.
  • said output side 10 of the reducer 4 is locked axially Y-Y, or from coming out of the housing 5 , by a stop ring 45 .
  • Said stop ring 45 is constrained to said at least one chamber wall or mantle 7 , so that said output side of the reducer 10 is closed between said support plate 8 and said stop ring 45 .
  • said stop ring 45 pack-closes said output side 10 of the reducer 4 against said support plate 8 , or, in accordance with an embodiment, against the radial crown prominences 54 provided in said housing 5 .
  • said stop ring 45 is made of plastic (for example PBT GF 30 or Polybutylene terephthalate).
  • said stop ring 45 is made of metal, for example, spring steel.
  • said stop ring 45 is inserted in a radial stop ring seat 55 provided in said chamber wall or mantle 7 of said chamber or first chamber 6 .
  • said stop ring 45 comprises radial stop ring teeth 56 that protrude radially so as to clamp the chamber wall or mantle 7 of the said chamber or first chamber 6 .
  • said radial stop ring teeth 56 are folded back towards the connection aperture of the group to the brake 18 so as to stick against said chamber wall or mantle 7 if pressed in extraction by said chamber or first chamber 6 , in the manner of grappling hooks.
  • a stop ring comprises an annular portion 82 drawn and folded towards the connection aperture of the brake assembly 18 so as to stick against said chamber wall or mantle 7 if pressed in extraction by said chamber or first chamber 6 , in the manner of a single annular grappling hook.
  • said stop ring 45 comprises a flat plate ring body 57 .
  • said stop ring 45 of the flat blade ring body 57 comprises ring body radial prominences 58 suitable to stick in the wall or mantle 7 of said chamber or first chamber 6 , or in the walls of said radial stop ring seat 55 .
  • said stop ring 45 of flat plate ring body 57 is a Seeger® ring.
  • said stop ring 45 is suitable to support an axial thrust of said output side 10 of the reducer 4 , such as a planetary gear 22 .
  • said reducer 4 is accommodated in said at least one chamber 6 by geometrically coupling its reducer seats 48 with the radial prominences of the reducer 47 provided in the chamber wall or mantle 7 that delimits at least one chamber 6 , to discharge onto these prominences 47 , and then on the housing 5 , any torsion actions and/or axial actions on the reducer 4 .
  • a second chamber 28 houses at least partially said electric motor 2 .
  • said second chamber housing the active end of the motor 30 of the electric motor 2 , for example the end from which the motor shaft 3 protrudes.
  • said support plate 8 comprises a first bearing of support and free rotation on the support plate for the motor shaft 42 .
  • said support plate 8 comprises a pair of seats for electrical contacts 77 , suitable to receive electrical contacts of the motor 78 , 79 to which are connected gear motor wiring braids 80 to the power supply and control system of the vehicle.
  • said electric motor 2 is accommodated in said at least one chamber 28 , for example said second chamber 28 , by geometrically coupling its motor seats 49 with the radial motor prominences 50 provided in the wall or mantle 51 that delimits said at least one chamber 28 , to discharge onto these prominences 50 , and then on the housing 5 , the torsion actions and/or axial actions on the motor 2 .
  • said support plate 8 divides said housing into three chambers 6 , 28 , 29 , a first chamber 6 accommodates the output side 10 of the reducer 4 , a second chamber houses at least a part of the electric motor 2 and a third chamber 29 houses the input side 9 of the reducer 4 , or the side of the reducer connected to the electric motor 2 .
  • Said second chamber 28 is closed by a first cover 40 substantially cup-shaped, selected from a set of cup-shaped covers, that forms a first cover compartment 46 of a predefined size and suitable for housing a portion of a specific size of electric motor 2 , in order to adapt said brake gear motor group 1 to different applications, by changing only said first cover 40 in said of first covers, and keeping the housing 5 unchanged to obtain gear motor assemblies of different powers.
  • said first cover 40 connecting to the housing 5 , pack-clamps the electric motor 2 against the radial motor prominences 50 provided in the wall or shell 51 that delimits at least one chamber 28 .
  • said first cover 40 connecting to the housing 5 , pack-clamps the electric motor 2 against said support plate 8 .
  • second elastic means 59 between said first cover 40 and said electric motor are interposed second elastic means 59 , suitable to dampen the vibrations and reduce the noise produced by operation of the gear motor group 1 .
  • said second elastic means are an O-ring 59 , or, in accordance with a further embodiment, a shaped elastic ring 83 or a wave spring 84 ( FIGS. 35, 36 and 37 ).
  • said second elastic means 59 are made of vibration and/or noise-damping (for example EPDM).
  • said housing 5 delimits a third chamber 29 that houses said input side 9 of the reducer 4 .
  • said third chamber 29 houses at least one gear cascade 21 .
  • said motor shaft 3 is supported by said support plate 8 and protrudes with one of its ends from the opposite side with respect to the electric motor 2 , projecting in said third chamber 29 to connect operatively to the input side 9 of the reducer 4 .
  • the input side 9 of the reducer 4 comprises a cascade or train of gears 21 .
  • said gear cascade 21 comprises a pinion 60 keyed on said motor shaft 3 .
  • said second gear cascade 21 comprises a non-motorised wheel 61 that engages said pinion 60 .
  • said non-motorised wheel 61 is keyed onto a non-motorised wheel pin 62 supported by said support plate 8 .
  • said gear cascade 21 comprises a secondary toothed wheel 63 meshed with said non-motorised wheel 62 and centrally supporting a toothed coupling pinion gear meshed with the output side of the reducer 10 , for example, passing through an aperture of the support plate 8 .
  • said gear cascade 21 comprises gears 60 , 61 , 63 arranged side by side, allowing positioning the motor axis X-X parallel to the axis Y-Y of the output side 10 of the reducer 4 , making the gear motor group 1 compact.
  • said secondary toothed wheel and said toothed coupling pinion are keyed on a secondary wheel pin 85 .
  • said group 1 comprises a thrust plate 64 connected to said support plate 8 forming an abutment for the reducer 4 , for example, the input side of the reducer 9 , for example a gear cascade 21 .
  • said thrust plate 64 comprises one or more first thrust plate surfaces 65 facing said reducer 4 .
  • said thrust plate 64 comprises one or more second thrust plate surfaces 66 on the side opposite said reducer 4 .
  • said thrust plate 64 includes a groove or lowering of the thrust plate 67 , which receives, without entering into contact, the motor shaft 3 and the pinion 60 , avoiding interfering with the pinion 60 and/or motor shaft 3 and avoiding influencing, with an axial reaction, the motor 2 and interfering with the action of the second elastic means 59 .
  • said third chamber 29 is closed by a second cover 41 , for example to protect said gear cascade 21 .
  • third elastic means 68 are interposed between said thrust plate 64 and said second cover 41 .
  • said third elastic means 68 are made of a material suitable to dampen the vibrations of the gear motor 1 and reduce noise during its operation.
  • the support plate 8 comprises a first bearing of support and free rotation for the motor shaft 42 , said bearing is realized by avoiding the interposition of elastic or damping means in order to avoid sagging in the kinematic chain that would reduce the readiness of response of the gear motor group 1 .
  • the support plate 8 comprises a bearing for non-motorised wheel 43 , or second pin support and free rotation bearing, said non-motorised wheel bearing is realized on the support plate avoiding the interposition of elastic or damping means in order to avoid sagging in the kinematic chain that would reduce the readiness of response of the gear motor group 1 .
  • the support plate 8 comprises a bearing for secondary wheel 44 , or third secondary wheel support and free rotation bearing 44 , said secondary wheel bearing is realized on the support plate avoiding the interposition of elastic or damping means in order to avoid sagging in the kinematic chain that would reduce the readiness of response of the gear motor group 1 .
  • said reducer 4 comprises gears 21 , 22 .
  • said gears 21 and straight-tooth gears are straight-tooth gears.
  • said gears 21 , 22 are helical-toothed gears in order to make the gear motor even more ready and allowing a greater and continuous grip between the gears of the reducer, reducing meshing vibration and noise ( FIG. 32 ).
  • the motor 2 is supported, and its rotation contrasted, by a shape coupling with radial prominences 50 provided in the wall or mantle 51 of the second chamber 28 , in which said prominences are accommodated with geometrical coupling in radial seats 49 provided in the motor 2 .
  • said prominences 50 allow supporting the motor 2 also in the axial direction X-X, avoiding directly loading the support plate 8 .
  • said housing 5 is made of synthetic material, while the radial motor support prominences 50 are implemented with metal inserts set in the body of the housing, for example by co-moulding.
  • the reducer output side gear 10 for example a planetary gear 22
  • the reducer output side gear 10 is supported, and its rotation contrasted by the shape coupling with radial reducer prominences 47 provided in the wall or mantle 7 of the first chamber 6 , in which said prominences 47 are accommodated with geometric coupling in radial seats 48 provided in the output side 10 of the reducer 4 , for example a planetary gear 22 .
  • said prominences 47 allow supporting the output side 10 of the reducer 4 also in the axial direction Y-Y, avoiding directly loading the support plate 8 .
  • said housing 5 is made of synthetic material and the reducer output side radial support prominences 47 are metal inserts set in the body of the housing, for example by co-moulding.
  • said support plate 8 comprises reinforcement ribs 69 that allow lightening the group 1 while, at the same time, avoid weakening it.
  • said support plate 8 includes ribs 70 for supporting the thrust plate 64 on the support plate 8 while avoiding axially loading the motor 2 and/or reducer 4 and creating a space for the free rotation of the gear cascade 21 .
  • said support plate 8 comprises an angular centring rib 71 that is geometrically coupled with a septum 72 of the thrust plate 64 .
  • said non-motorised wheel 61 is keyed onto a pin 62 supported by a first end of the support plate 8 and by the thrust plate 64 on the other end.
  • said pin 62 also performs the function of centring pin of the thrust plate 64 on the support plate 8 .
  • said pin 62 is co-moulded with the support plate 8 .
  • said secondary toothed wheel 63 and said toothed coupling pinion are keyed on a secondary wheel pin 85 made as a single piece or co-moulded with said thrust plate ( FIG. 38 ).
  • a disc brake calliper 12 comprises a calliper body 73 suitable to be placed astride a brake disc 14 .
  • Said brake disc ( 14 ) comprises a first braking surface 38 and a second braking surface 39 .
  • Said calliper body 73 also comprises a first vehicle side portion 74 , suitable to face said first braking surface 38 of the brake disk 14 , which comprises thrust means 75 housed in it, i.e., a device suitable to influence at least one pad in abutment on a braking surface of the disc.
  • thrust means 75 housed in it, i.e., a device suitable to influence at least one pad in abutment on a braking surface of the disc.
  • said first vehicle side portion 74 comprises at least a first seat 76 suitable to receive at least a first pad 13 , suitable to face and be placed substantially parallel to said first braking surface 38 .
  • said at least a first pad 13 is slidingly accommodated in said at least one first seat 76 so as to be positioned between said first vehicle side portion 74 and said first braking surface 38 to abut against said first braking surface 38 and exert a braking action on the brake disc 14 when influenced by the thrust means 75 .
  • the calliper comprises a gear motor group according to one of the embodiments described above, wherein said group is operatively connected to said thrust means 75 .
  • a disc brake comprising a brake disc 14 on which a calliper is placed astride according to one of the embodiments described above, wherein, for example but not necessarily, said brake is a parking brake.
  • a disc brake comprising a brake disc 14 on which a calliper is placed astride according to one of the embodiments described above, wherein, for example but not necessarily, said brake is a service brake.
  • a brake gear motor group 1 comprises
  • a support plate 8 is provided in said housing.
  • said motor 2 is accommodated, at least in part, in said at least one chamber 28 and said drive shaft 3 is supported freely rotatable in said support plate 8 .
  • said reducer 4 is accommodated in said at least one chamber 6 , 29 .
  • said reducer 4 is supported freely rotatable in said support plate 8 .
  • said housing 5 comprises a connection rim to the brake 11 suitable to couple said housing 5 to a brake calliper 12 so as to interface said output side 10 to the brake and allow the movement of at least one brake pad 13 towards and away from a disc brake disc 14 and exert a braking action.
  • said support plate 8 is in one piece, or a single piece, with said housing 5 , and said support plate 8 divides said housing in three chambers 6 , 28 , 29 ,
  • a brake gear motor group 1 comprises:
  • a support plate 8 is provided in said housing.
  • said motor 2 is accommodated, at least in part, in said at least one chamber 28 and said drive shaft 3 is supported freely rotatable in said support plate 8 .
  • said reducer 4 is accommodated in said at least one chamber 6 , 29 .
  • said reducer 4 is supported freely rotatable in said support plate 8 .
  • said housing 5 comprises a connection rim to the brake 11 suitable to couple said housing 5 to a brake calliper 12 so as to interface said output side 10 to the brake and allow the movement of at least one brake pad 13 towards and away from a disc brake disc 14 and exert a braking action.
  • said output side 10 of the reducer 4 is locked axially Y-Y, or blocked from sliding out of said housing 5 , by a stop ring 45 and said stop ring 45 is constrained to said at least one chamber wall or mantle 7 , so that said output side of the reducer 10 is pack-closed between said support plate 8 and said stop ring 45 .
  • a brake gear motor group 1 comprises:
  • a support plate 8 is provided in said housing.
  • said motor 2 is accommodated, at least in part, in said at least one chamber 28 and said drive shaft 3 is supported freely rotatable in said support plate 8 .
  • said reducer 4 is accommodated in said at least one chamber 6 , 29 .
  • said reducer 4 is supported freely rotatable in said support plate 8 .
  • said housing 5 comprises a connection rim to the brake 11 suitable to couple said housing 5 to a brake calliper 12 so as to interface said output side 10 to the brake and allow the movement of at least one brake pad 13 towards and away from a disc brake disc 14 and exert a braking action.
  • said support plate 8 divides said housing in three chambers 6 , 28 , 29 ,
  • a brake gear motor group 1 comprises:
  • a support plate 8 is provided in said housing.
  • said motor 2 is accommodated, at least in part, in said at least one chamber 28 and said drive shaft 3 is supported freely rotatable in said support plate 8 .
  • said reducer 4 is accommodated in said at least one chamber 6 , 29 .
  • said reducer 4 is supported freely rotatable in said support plate 8 .
  • said housing 5 comprises a connection rim to the brake 11 suitable to couple said housing 5 to a brake calliper 12 so as to interface said output side 10 to the brake and allow the movement of at least one brake pad 13 towards and away from a disc brake disc 14 and exert a braking action.
  • said reducer 4 is accommodated in said at least one chamber 6 by geometrically coupling its reducer seats 48 with the radial prominences of the reducer 47 provided in the chamber wall or mantle 7 that delimits at least one chamber 6 , to discharge onto these prominences 47 , and then on the housing 5 , any torsion actions and/or axial actions on the reducer 4 .
  • a brake gear motor group 1 comprises:
  • a support plate 8 is provided in said housing.
  • said motor 2 is accommodated, at least in part, in said at least one chamber 28 and said drive shaft 3 is supported freely rotatable in said support plate 8 .
  • said reducer 4 is accommodated in said at least one chamber 6 , 29 .
  • said reducer 4 is supported freely rotatable in said support plate 8 .
  • said housing 5 comprises a connection rim to the brake 11 suitable to couple said housing 5 to a brake calliper 12 so as to interface said output side 10 to the brake and allow the movement of at least one brake pad 13 towards and away from a disc brake disc 14 and exert a braking action.
  • said electric motor 2 is accommodated in said at least one chamber 28 by geometrically coupling its motor seats 49 with the radial motor prominences 50 provided in the wall or mantle 51 that delimits said at least one chamber 28 , to discharge onto these prominences 50 , and then on the housing 5 , the torsion actions and/or axial actions in the motor.
  • a brake gear motor group 1 comprises:
  • a support plate 8 is provided in said housing.
  • said motor 2 is accommodated, at least in part, in said at least one chamber 28 and said drive shaft 3 is supported freely rotatable in said support plate 8 .
  • said reducer 4 is accommodated in said at least one chamber 6 , 29 .
  • said reducer 4 is supported freely rotatable in said support plate 8 .
  • said housing 5 comprises a connection rim to the brake 11 suitable to couple said housing 5 to a brake calliper 12 so as to interface said output side 10 to the brake and allow the movement of at least one brake pad 13 towards and away from a disc brake disc 14 and exert a braking action.
  • said motor 2 defines a first axial direction X-X; said reducer 4 , at its reducer output side 10 , defines a second axial direction Y-Y and said support plate 8 is connected to said housing 5 so as to delimit three chambers 6 , 28 , 29 , two of which open or that face in the same direction as the axial direction X-X or Y-Y and one that faces the opposite direction, and two of said three chambers 28 , 29 are closed by a first cover 40 and a second cover 41 , while the third chamber 6 is suitable to connect, through a connection aperture of the group to the brake 18 , to a brake calliper 12 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Braking Arrangements (AREA)
  • Retarders (AREA)
  • Springs (AREA)
  • Braking Systems And Boosters (AREA)
  • Vibration Prevention Devices (AREA)
  • General Details Of Gearings (AREA)
US15/301,098 2014-04-01 2015-04-01 Brake gear motor group Active 2035-07-11 US10316915B2 (en)

Applications Claiming Priority (22)

Application Number Priority Date Filing Date Title
ITMI20140573 2014-04-01
ITMI2014A0568 2014-04-01
ITMI2014A000569 2014-04-01
ITMI2014A000567 2014-04-01
ITMI20140570 2014-04-01
ITMI20140572 2014-04-01
ITMI2014A000568 2014-04-01
ITMI2014A0572 2014-04-01
ITMI2014A000572 2014-04-01
ITMI2014A0567 2014-04-01
ITMI20140565 2014-04-01
ITMI20140567 2014-04-01
ITMI2014A000565 2014-04-01
ITMI2014A0570 2014-04-01
ITMI20140569 2014-04-01
ITMI2014A000573 2014-04-01
ITMI2014A0573 2014-04-01
ITMI2014A000570 2014-04-01
ITMI2014A0565 2014-04-01
ITMI2014A0569 2014-04-01
ITMI20140568 2014-04-01
PCT/IB2015/052410 WO2015151052A1 (en) 2014-04-01 2015-04-01 Brake gear motor group

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US20170023081A1 US20170023081A1 (en) 2017-01-26
US10316915B2 true US10316915B2 (en) 2019-06-11

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EP (1) EP3126202B1 (ko)
JP (1) JP6779786B2 (ko)
KR (1) KR102404237B1 (ko)
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US20180238408A1 (en) * 2017-02-21 2018-08-23 Mando Corporation Electronic disc brake
EP4248104A1 (fr) * 2020-11-19 2023-09-27 Hitachi Astemo France Reducteur de vibrations pour groupe motoreducteur pour actionneur electrique de frein a disque
IT202200026673A1 (it) * 2022-12-23 2024-06-23 Brembo S P A Attuatore elettroidraulico per freno
FR3148064A1 (fr) * 2023-04-21 2024-10-25 Hitachi Astemo France Frein a disque electromécanique à compacité augmentée

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FR3057924B1 (fr) * 2016-10-25 2019-08-30 Foundation Brakes France Etrier de frein avec compression axiale d'un joint d'etancheite entre un carter d'actionneur et un corps d'etrier
JP7205814B2 (ja) * 2017-10-06 2023-01-17 日本電産サーボ株式会社 モータユニット、駆動装置
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KR20190133834A (ko) * 2018-05-24 2019-12-04 주식회사 만도 브레이크장치용 엑츄에이터
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US10960866B2 (en) * 2019-03-28 2021-03-30 Keyang Electric Machinery Co., Ltd. Actuator having double-gear structure for electromechanical parking brake
JP2022532228A (ja) 2019-05-13 2022-07-13 ブレンボ・ソチエタ・ペル・アツィオーニ ディスクブレーキ用ブレーキキャリパ
EP3969774B1 (en) * 2019-05-13 2024-02-21 Brembo S.p.A. A brake caliper for disc brake
WO2021015480A1 (ko) * 2019-07-23 2021-01-28 주식회사 만도 전자식 주차 브레이크용 액추에이터
EP3783243B1 (de) * 2019-08-22 2022-12-28 ZF CV Systems Global GmbH Elektromechanischer bremsaktuator für eine scheibenbremse
JP7318450B2 (ja) * 2019-09-24 2023-08-01 株式会社ジェイテクト 転舵装置
KR102703453B1 (ko) * 2022-05-10 2024-09-04 주식회사 모아텍 엑츄에이터 및 전자기기
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Publication number Priority date Publication date Assignee Title
US20180238408A1 (en) * 2017-02-21 2018-08-23 Mando Corporation Electronic disc brake
US10865842B2 (en) * 2017-02-21 2020-12-15 Mando Corporation Electronic disc brake
EP4248104A1 (fr) * 2020-11-19 2023-09-27 Hitachi Astemo France Reducteur de vibrations pour groupe motoreducteur pour actionneur electrique de frein a disque
IT202200026673A1 (it) * 2022-12-23 2024-06-23 Brembo S P A Attuatore elettroidraulico per freno
WO2024134570A1 (en) * 2022-12-23 2024-06-27 Brembo S.P.A. Electro-hydraulic actuator for a brake
FR3148064A1 (fr) * 2023-04-21 2024-10-25 Hitachi Astemo France Frein a disque electromécanique à compacité augmentée

Also Published As

Publication number Publication date
CN106415049B (zh) 2019-07-16
WO2015151052A1 (en) 2015-10-08
EP3126202A1 (en) 2017-02-08
KR102404237B1 (ko) 2022-06-02
CN106415049A (zh) 2017-02-15
JP2017512952A (ja) 2017-05-25
KR20160138287A (ko) 2016-12-02
JP6779786B2 (ja) 2020-11-04
US20170023081A1 (en) 2017-01-26
EP3126202B1 (en) 2021-03-03

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